Tìm x,y,z biết

a)

\(\dfrac{x}{2}=\dfrac{y}{3};\dfrac{y}{4}=\dfrac{z}{5}\) và \(x^2-y^2=-16\)

b)

2x=3y=5z và x+y-z=95

Complete the sentences with the correct form of the words in the box

(entertain-maths-nation-relax-safe-profession-enjoy-employ-attend-crowd)

1.The police gave him protection for his own _________

2.How many times do I have to ask you to pay ___________

3.The company made hundreds of ________ redundant

4.The store was_________ with shoppers

5.The show brought_________to millions of viewers

6.She listens to folk music for_________

7.Cinema is a medium of mass___________

8.He can calculate very quickly.He has an amazing ability to solve __________problems

9.In 1963 he was appointed_________of history

10.Dang Thai SOn is a Vietnamese pianist with an____________reputation

\(B=\dfrac{1}{2}+\left(\dfrac{1}{2}\right)^2+\left(\dfrac{1}{2}\right)^3+...+\left(\dfrac{1}{2}\right)^{98}+\left(\dfrac{1}{2}\right)^{99}\)

So sánh B với 1

Tìm x

A)\(\left(x+3\right)^3-x\left(3x+1\right)^2+\left(2x+1\right)\left(4x^2-2x+1\right)=28\)

B)\(\left(x^2-1\right)^3-\left(x^4+x^2+1\right)\left(x^2-1\right)=0\)

Choose the best answer

1.The crops ______ on the weather
A.depend heavy
B.depend heavily
C.affect heavy
D.affect heavily

2.Mai studies Maths a little bit____________
A.bad
B.badly
C.good
D.smartly

Use the correct form

1.For the Muong,rice is also the mai__________ crop(agriculture)

2.Viet Nam is a country of tremendous_________with 54 ethnic groups(diverse)

Rewrite

1.He always gets to work on time
->He's

2.I'm sorry to have kept you waiting
->I must

3.The bus strike prevented me from going to work
->I wasn't

4.He didn't know enough English to pass the examination
->He found the English examination

5.If I had seen him, I would not hve gone home
-> As I didn't

6.The teacher made the class stay in after school
->The class

7.I started going to Scotland for my holiday 5 years ago
-> I have

8.He's an only child
-> He hasn't

Dùng vào từ gợi ý để hoàn thành câu

1.I/write/reply/your advertisement/position cheif accountant/Manchester branch
->

2.I/be/qualified accountant/and/work/Smith and Brown/architects/last four years
->

3.They/be/happy/give/your/reference
->

4.I/be anxious/improve/my position/as/have wife/2 children/support
->

5.I/be glad/opportunity/take on/more responsibility
->

6.We/be willing/move/London/Manchester/short notice
->

7.I/be/happy/present job/but/no prospects/promotion
->

8.I/hope/hear/you/earliest convenience
->